Depending on the altcoin of the IEO, if the coin of the IEO is potentially good then I directly buy from IEO, if the coin is somewhat doubtful of his and then I wait for listing on his exchanger exchange. So with so much safer to get profit.
yeah, i think you are right.
it all depends on the IEO project, if we think the project is good and very profitable. i think, it doesn't matter if we buy it. although IEO is very good, but we also can not carelessly buy coins. we also have to be careful because not all IEO coins will make us profit.